CN102058374A - Endoscopic shaft from a composite hose - Google Patents
Endoscopic shaft from a composite hose Download PDFInfo
- Publication number
- CN102058374A CN102058374A CN2010105468857A CN201010546885A CN102058374A CN 102058374 A CN102058374 A CN 102058374A CN 2010105468857 A CN2010105468857 A CN 2010105468857A CN 201010546885 A CN201010546885 A CN 201010546885A CN 102058374 A CN102058374 A CN 102058374A
- Authority
- CN
- China
- Prior art keywords
- tube
- pipe
- endoscope shaft
- helical spring
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000005056 compaction Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 210000001072 colon Anatomy 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000037062 Polyps Diseases 0.000 description 1
- 208000004680 Rectal Fistula Diseases 0.000 description 1
- 206010002156 anal fistula Diseases 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/00073—Insertion part of the endoscope body with externally grooved shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/00075—Insertion part of the endoscope body with externally roughened shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/00078—Insertion part of the endoscope body with stiffening means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0055—Constructional details of insertion parts, e.g. vertebral elements
Abstract
An endoscope shaft made of a composite tube comprises an external tube and an internal tube which is softer and more resilient compared to the external tube as well as a helical spring for stiffening the composite tube. According to the invention, the helical spring in the relaxed state has an outer diameter which is larger than the inner diameter of the internal tube. Furthermore the helical spring is inserted in the internal tube preferably loosely at a spring bias, whereby it is radially pressed against the internal tube.
Description
Technical field
The present invention relates to the endoscope shaft made by composite material tube, particularly relate to comprise an outer tube, one than this outer tube soft and/or more resilient in pipe and being used to increase the helical spring endoscope shaft of making by composite material tube of the rigidity of composite material tube.
Background technology
Recently, endoscope is inserted the distance that reaches 2.5m in patient's the colon, to check and treatment patient's pathology change in organization when needing, cancer for example, polyp (polypi), anal fistula etc.In order to overcome this extremely long insertion distance, the driving device that is made of the pipe that turns up that surrounds endoscope shaft is equipped with in new endoscope.Utilize this driving device that endoscope shaft is advanced, and centripetal force is added on the endoscope shaft.
From the level of present technical merit, particularly applicant, in the scope of many patent publications, disclose and comprise and to drive endoscope shaft forward and this endoscope of the tube drive device that turns up backward.This endoscope is made of the endoscope shaft of inserting and slide in the pipe that turns up basically.This pipe that turns up constitutes (two pipe design of turning up) by pvc pipe or the far-end and the silicone on the near-end that turn up in endoscope shaft, and driving device is then on the core of this pipe.The associated end at this pipe in the outside of turning up is directed to this driving device and is fixed on the housing of this driving device.
This driving device itself is made up of successive advancement mechanism with a plurality of driving wheels or a crawler belt or discontinuous driving mechanism.Basically, this driving device only drives the pipe that turns up, and this pipe that turns up is added in driving force on the endoscope shaft again.For this purpose, this driving device and driving mechanism thereof respectively with the tube portion CONTACT WITH FRICTION of turning up of inside, and rely on friction centripetal force to be passed to the tube portion that turns up of this inside.This centripetal force that produces on the interior face portion of this pipe that turns up makes the far-end of this pipe that the turns up part of turning up produce and to travel forward, and contact and slip thereon with block on being fixed on endoscope shaft.Therefore, the far-end of this pipe that turns up the travelling forward and passing to endoscope shaft of part of turning up by this block, thus make the latter enter the tube portion that turns up of this inside.
Because the condition of motion, the pace of the tube portion that turns up of the inside of this pipe that turns up is the twice of the pace of endoscope shaft, therefore needs relative sliding motion to make synchronized movement.
As can be known, for enough centripetal forces being passed to the inner tube portion that turns up, driving mechanism must be pressed on the contact force of predetermined minimum on the inner tube portion that turns up from the above-mentioned explanation of the state of the art.Yet this causes endoscope shaft that impression is arranged in the zone of driving mechanism basically.In addition, must overcome in this position in endoscope shaft and inner bigger friction of turning up between the tube portion.This has only the sufficient lubrication endoscope shaft just may realize.Find that in addition driving mechanism makes the endoscope shaft distortion in short stroke or long stroke, this causes the pipe that turns up inhomogeneous with endoscope shaft feeding therein.
In order endoscope to be inserted distance above-mentioned in patient's colon, endoscope shaft must have high flexible and elasticity.But this and endoscope shaft form the essential character contradiction of enough inflexible rear supports of driving mechanism.
Because the defective that above-mentioned existing endoscope shaft exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and Professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of endoscope shaft of making by composite material tube of new construction, can improve general existing endoscope shaft, make it have more practicality.Through constantly research, design, and, create the present invention who has practical value finally through after studying sample and improvement repeatedly.
Summary of the invention
Consider these problems, the objective of the invention is to provide a kind of endoscope shaft of making by composite, this material has enough elasticity, can be as the rear support of the driving device of the pipe that turns up that surrounds endoscope shaft, and the friction between the pipe of turning up that also can reduce endoscope shaft and surround it.
According to the present invention, this purpose can utilize the endoscope shaft of being made by composite of the characteristics that comprise claim 1 to reach.
Of the present invention further specifying is the thing of dependent claims.
Thereby, the endoscope shaft that core of the present invention is made by the composite material tube with outer tube and and/or interior pipe that elasticity big softer than outer tube for manufacturing, and the inflexible helical spring that increases composite material tube.According to the present invention, under relaxed state, this helical spring external diameter is bigger than the internal diameter (slightly) of this interior pipe.This helical spring insert should in the pipe, especially under predetermined spring biasing (depending on spring rate and radial dimension), this helical spring loosely insert should in the pipe, thereby at radial compaction in this on pipe.
Like this, helical spring is as the improved rear support of the driving device of then placing for endoscope shaft, not still because the rigidity of its material, and be, can prevent like this because the radial deformation of the endoscope shaft that the persistent thrust effect of driving device causes because it is installed with radial offset.
According to another aspect of the present invention, provide the endoscope shaft that comprises an outer tube, the external peripheral surface of this outer tube has helicoidal structure.In other words, the external peripheral surface of this pipe forms along the axial direction of this pipe depression or the ledge with spiral extension.
Best, selection helical spring thrust that radially outwards acts on the pipe in this is bigger, and feasible helical spring according to first aspect passes through to manage in this and the wall of outer tube extrudes a structure in the outside of outer tube.In addition, preferably the structure in this outer tube outside corresponding to this helical spring spring coil.This has individual advantage to be, can center on the endoscope shaft relative motion as the pipe that turns up of driving device, and the driving force of effect driving device thereon and the contact surface of endoscope shaft reduce, and can make endoscope shaft and the friction of turning up between the pipe reduces.
In addition, the tangible outboard structure that becomes (surface texture) forms the reception recess (pit) of collecting the lubricant that is pressed into, can more reduce friction like this.
This helical spring of preferred design makes it have different spring rates and/or gradient and/or external diameter on its axial length in this sense, with the elasticity of the endoscope shaft of optimizing the each several part on the length of 2.5m.
Then, the invention provides the endoscope that comprises the tube drive device that turns up, this driving device is made up of the driving tube of the secondary that turns up that is surrounded by a driving device.This driving device comprises and this driving tube frictional engagement, and centripetal force is added in driving part (for example friction pulley) on this driving tube.According to the present invention, the endoscope shaft with These characteristics is directed in this driving tube slides, and forms radially rear support for driving part.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of description, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the side view of the endoscope shaft of endoscope of the present invention.
The specific embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the specific embodiment, structure, feature and the effect thereof of the endoscope shaft of making by composite material tube that foundation the present invention is proposed, describe in detail as after.
Utilize preferred embodiment to explain the present invention below with reference to an accompanying drawing.Fig. 1 represents the side view according to the endoscope shaft of endoscope of the present invention, and it comprises the tube drive device that turns up according to a preferred embodiment of the invention.
This endoscope shaft is made of the composite material tube 1 of the outer surface with so-called friction optimization.Specifically, two co-extruded or the bonding pipe be made up of pipe in and outer tube of this composite material tube forms.Pipe is by the material manufacture softer than outer tube in being somebody's turn to do.Guarantee the minimum flexible of card composite material tube in being somebody's turn to do, and this outer tube guarantees minimum deformation drag and good frictional behavior in its surface.Specifically, shore hardness of pipe is about Xiao Shi A60 in this, and the shore hardness of this outer tube is about Xiao Shi A92.In addition, pipe is best by the PVC material manufacture in this, and outer tube is by the PUR material manufacture.
Helical spring 2 clamped (interpolation) is in composite material tube 1, to increase radial rigidity.
Specifically, under relaxed state, internal diameter of pipe is slightly littler than the external diameter of helical spring 2 in this.In order to add operation, this spring 2 is reversed, so its diameter reduces.Then, in this, on the basic total length of pipe, this spring is inserted in the internal diameter of pipe in this, and make it lax.Like this, the diameter of helical spring 2 broadens, and this helical spring produces radial force on this composite material tube 1, and this composite material tube 1 is broadened a little.
Specifically, the radially clamping force of the helical spring 2 of insertion makes and can see one spring coil in the outside of composite material tube 1, thereby sees the radial protrusion that has a little and the spiral ribs figure of indenture.The geometry of this spring is preferably rectangle, so that utilize the restoring force of composite material tube 1 or the thrust of driving device of the endoscope of this endoscope shaft is housed, gets rid of the inclination of the spring 2 that inserts to greatest extent.In addition, the geometry of this orthogonal spring increases the internal diameter freely (composite material tube and flat spring are together) of this composite material tube.
In the process of the endoscopic procedure of finishing,, promptly, clamp this composite material tube 1 and flat spring 3 this nozzle first line of a couplet ground connection from the lubricating nozzle 4 of the outstanding metalwork of backend arrangement of patient's body orifice at the near-end of this composite material tube 1.
As another interchangeable form of above-mentioned rectangle spring geometry, also can design circular or oval-shaped spring.In addition, also can use spring with two different gradients on the longitudinal direction of spring.Like this, the rigidity of composite material tube 1 is the function of its length.This is favourable to intracolic " travel distance " optimized patient.
Also have another to optimize used helical spring scheme, promptly in the stride that on the longitudinal direction of this spring, normally separates, change the external diameter of this spring.Based on observation, promptly according to the above description, this helical spring is given special structure in the outside of composite material tube, and this structure can form in a different manner securely at the longitudinal direction of this composite material tube.Advantage and effect according to the design of the endoscope shaft of the endoscope that the tube drive device that turns up is housed of the present invention are summarized as follows.
As described in beginning, the endoscope that described endoscope shaft is housed comprises the tube drive device that turns up, and this driving device is made of the pipe that the secondary that is surrounded by a driving device turns up, in order to transmit friction feed power.This driving device makes the driving part, and for example driving wheel or crawler belt and radial interior tube portion CONTACT WITH FRICTION are managed in the longitudinal direction driving of the pipe that turns up is somebody's turn to do.This actuation movement of the tube portion that turns up of this inside passes to the endoscope shaft that can move relatively in this turns up pipe in the zone of turning up that hold preceding (far) and/or the back (closely) of this pipe that turns up.Because in the described reason of beginning, this ability that relatively moves between the interior tube portion of endoscope shaft and this driving tube has outstanding importance.
In order to form enough CONTACT WITH FRICTION, this driving part must be pressed on this inside tube portion that turns up with radial force.For this reason, this inside endoscope shaft can be used as the rear support of this driving part.Obviously, increase in this position endoscope shaft and inner friction of turning up between the tube portion.
Should be taken into account for two kinds of materials of this function optimization use.That is to say, soft guarantee that the card endoscope shaft travels forward in elastic, enter patient's colon, at this moment endoscope shaft is flexibly followed the bending of colon, can not widen colon excessively.Guarantee rigidity with the harder outer tube of endoscope's central siphon of inside, can be used as the rear support of the driving part of the tube drive device that turns up like this in radial predetermined minimum.So as can be known, the wall thickness of pipe was little a lot of in the wall thickness of outer tube was comparable, still can keep enough radial rigidities.
The helical spring that inserts in the interior pipe with interior pipe (loosely) that relatively radial dimension is big is widened whole composite material tube, and the impression of spring coil is arranged in the outside of outer tube.This helical spring is supported the rear support function of outer tube, and helps endoscope shaft in the feeding process, and driven device does not push or radial deformation in the zone that drives part.This helical spring increases the elasticity of endoscope shaft a little on its total length.At last, cause that the contact surface that turns up between the pipe that the spiral type circumferential groove on the outside of outer tube makes endoscope shaft and surrounds the driving of this endoscope shaft reduces by helical spring radial compaction power.Because this area supported reduces, endoscope shaft and the frictional force of turning up between the pipe reduce.At last, this groove forms the lubricant pit, and the lubricant that turns up between the pipe that is pressed into endoscope shaft and driving is stored in wherein.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the method that can utilize above-mentioned announcement and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. endoscope shaft of making by composite material tube (1), it comprise an outer tube and one than this outer tube soft and/or more resilient in pipe, and the helical spring (2) that is used to increase the rigidity of composite material tube (1), it is characterized by, under relaxed state, the external diameter of this helical spring (2) is bigger than the internal diameter of this interior pipe, and this helical spring (2) inserts and is somebody's turn to do in the interior pipe, especially under spring biasing this helical spring (2) loosely insert should in the pipe, thereby this helical spring (2) at radial compaction in this on pipe.
2. endoscope shaft as claimed in claim 1 is characterized by, and selects radial compaction power enough big, makes the wall of this helical spring (2) by pipe and outer tube in this, extrudes a structure in the outside of this outer tube.
3. endoscope shaft as claimed in claim 2 is characterized by, and the structure on this outer tube outside is corresponding to the spring coil of this helical spring (2), and forms spiral convex epirelief and indenture.
4. as any described endoscope shaft in the previous claim, it is characterized by, the hardness of this outer tube is Xiao Shi A92, and hardness of pipe is Xiao Shi A60 in this.
5. endoscope shaft as claimed in claim 4 is characterized by, and this outer tube is made of PUR, and pipe is made of PVC in this.
6. as any described endoscope shaft in the previous claim, it is characterized by, this outer and inner pipe is by co-extruded.
7. as any described endoscope shaft in the previous claim, it is characterized by, the wall thickness of pipe was little in the wall ratio of this outer tube was somebody's turn to do.
8. as any described endoscope shaft in the previous claim, it is characterized by, this helical spring (2) has the geometry of rectangle spring.
9. as any described endoscope shaft in the previous claim, it is characterized by, shaft length is about 2.5m.
10. endoscope, it comprises the tube drive device of being made up of driving tube that turns up, this driving tube is comprised that the driving device that drives part surrounds, especially this driving tube secondary that turns up, this drives part and this driving tube frictional engagement, and centripetal force is added on this driving tube, it is characterized by, be directed in this driving tube according to endoscope shaft any among the claim 1-9 and slide, and form radially rear support for this driving part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009052688A DE102009052688A1 (en) | 2009-11-11 | 2009-11-11 | Endoscope shaft made of a composite tube |
| DE102009052688.9 | 2009-11-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102058374A true CN102058374A (en) | 2011-05-18 |
| CN102058374B CN102058374B (en) | 2014-10-08 |
Family
ID=43568280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010546885.7A Expired - Fee Related CN102058374B (en) | 2009-11-11 | 2010-11-11 | Endoscopic shaft from a composite hose |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8608646B2 (en) |
| EP (1) | EP2322079B1 (en) |
| JP (1) | JP5583556B2 (en) |
| CN (1) | CN102058374B (en) |
| DE (1) | DE102009052688A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040199052A1 (en) | 2003-04-01 | 2004-10-07 | Scimed Life Systems, Inc. | Endoscopic imaging system |
| CN104706309A (en) * | 2015-03-30 | 2015-06-17 | 珠海普生医疗科技有限公司 | Speculum and bending part structure for speculum |
| US20200054198A1 (en) * | 2018-08-17 | 2020-02-20 | Ching-Shun Tseng | Endoscope With Inspection Accessory and Inspection Accessory for the Same |
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| DE102008042718A1 (en) * | 2008-10-09 | 2010-04-15 | Invendo Medical Gmbh | Medical engineering, elastic polymer tube and method for its production |
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2009
- 2009-11-11 DE DE102009052688A patent/DE102009052688A1/en not_active Withdrawn
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2010
- 2010-11-08 EP EP20100190378 patent/EP2322079B1/en active Active
- 2010-11-10 JP JP2010251546A patent/JP5583556B2/en not_active Expired - Fee Related
- 2010-11-10 US US12/943,480 patent/US8608646B2/en active Active
- 2010-11-11 CN CN201010546885.7A patent/CN102058374B/en not_active Expired - Fee Related
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| WO1994015522A1 (en) * | 1993-01-13 | 1994-07-21 | Imagyn Medical, Inc. | Endoscope with grooved outer surface |
| EP0913165A1 (en) * | 1997-11-03 | 1999-05-06 | STM Medizintechnik Starnberg GmbH | Eversion catheter construction |
| WO2001066176A1 (en) * | 2000-03-08 | 2001-09-13 | Boston Scientific Limited | Composite flexible tube for medical applications |
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| WO2007056302A2 (en) * | 2005-11-08 | 2007-05-18 | Custom Medical Applications, Inc. | Reinforced catheter with articulated distal tip |
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| CN101234034A (en) * | 2007-01-17 | 2008-08-06 | Aga医药有限公司 | System for controllably delivering stent and transplant |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2011120891A (en) | 2011-06-23 |
| CN102058374B (en) | 2014-10-08 |
| JP5583556B2 (en) | 2014-09-03 |
| EP2322079A1 (en) | 2011-05-18 |
| DE102009052688A1 (en) | 2011-05-12 |
| EP2322079B1 (en) | 2015-04-22 |
| US20110144433A1 (en) | 2011-06-16 |
| US8608646B2 (en) | 2013-12-17 |
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